Wolfram Alpha - http://www.wolframalpha.com - introduces a fundamentally new way to get knowledge and answers— not by searching the web, but by doing dynamic computations based on a vast collection of built-in data, algorithms, and methods.
Teacher Tube - http://www1.teachertube.com- Allows teachers to watch, share and comment on various educational videos.
Jeopardy Labs - http://jeopardylabs.com- Create your own Jeopardy template or browse for templates online.
"23 Things" is a set of mini-tutorials on technologies that teachers can use to inform their professional practices.These tutorials highlight technologies that can be learned in 15 - 60 minutes and be immediately used in planning and instruction. - https://sites.google.com/site/cpsedtechportal/23things
Online Stopwatch (this online stopwatch can be used for various purposes as a time management tool) - http://www.online-stopwatch.com/
Time and Date (gives people free Time and Date, World Clocks, Time Zones, Calendars, Weather, Timers, Calculators, Apps, etc) - http://www.timeanddate.com
Voice Thread (is a collaborative, multimedia slide show that holds [[/about/features/media/|images, documents, and videos]] and allows people to navigate slides and leave [[/about/features/commenting/|comments in 5 ways]] - using voice (with a mic or telephone), text, audio file, or video (via a webcam). [[/about/features/sharing/|Share]] a VoiceThread with friends, students, and colleagues for them to record comments too). http://voicethread.com/
Here are a list of various resources, tips & websites you can use to expand your technology knowledge and incorporate in your classroom.